What properties of glucokinase allow it to phosphorylate glucose in the liver when the blood glucose concentration is higher than normal?

Q: Why does it make good metabolic sense for phosphoenolpyruvate carbox- ykinase, rather than pyruvate…

A: Phosphoenolpyruvate carboxylase is an enzyme in the family of carboxy-lyases found in plants and…

Q: What are the regulatory means that prevent high levels of activity in glycolysis and gluconeogenesis…

A: Glycolysis is the first step of cellular respiration that deals with the breakdown of glucose to…

Q: What is the function of the kinase associated with the pyruvate dehydrogenase complex?

A: Pyruvate dehydrogenase complex (PDC) is a complex of three enzymes that converts pyruvate into…

Q: where do a-amylase and B-amylase carry out their enzymatic functions?

A: a-amylase and B-amylase carry out their enzymatic functions is Mouth.

Q: Where does Gluconeogenesis occur and from what precursors?

A: Gluconeogenesis is the pathway of synthesis of glucose. Gluconeogenesis supplies the needs for…

Q: Why are thioesters considered high-energycompounds?

A: Energy-rich compounds in cells comprise five kinds of high-energy bonds: phosphoanhydride, acyl…

Q: Name the molecules used for gluconeogenesis. What are the sources of these molecules? Under what…

A: Gluconeogenesis is the metabolic process by which organisms produce sugars (namely glucose) for…

Q: What effect is observed on the rate of gluconeogenesis under each of the following conditions? a.…

A: Carbohydrates and fatty acids are oxidized to generate energy for metabolic processes. Carbohydrates…

Q: What role does cyclic AMP play in glucose regulation?

A: Cyclic adenosine monophosphate is a messenger molecule used in the signalling pathways. It is…

Q: How does the hydrolysis of fructose-1,6- bisphosphate bring about the reversal of one of the…

A: Glycolysis is a metabolic process that breaks down glucose to form pyruvate and two adenosine…

Q: What is the rationale for the inhibition of muscle glycogen phosphorylase by glucose 6- phosphate…

A: Glycogenolysis- breaking down of molecular glycogen into glucose.  Glycolysis- glucose molecules…

Q: What roles do thioredoxin and thioredoxin reductase playin the metabolism of nucleotides?

A: Thioredoxin reductases are the members of pyridine nucleotide-disulfide oxidoreductase family.…

Q: Why is AMP and not ADP the positive regulator of phosphofructokinase?

A: Metabolic pathways are defined as the set of chemical reactions occurring in the body. Metabolic…

Q: In what condition and why is pyruvate converted to lactate?

A: Pyruvic acid is produced as a product of glycolysis, which is the anaerobic metabolism of glucose.…

Q: What accounts for the fact that liver phosphorylase is a glucose sensor, whereas muscle…

A: Glycogen phosphorylase breakdown of glycogen to glucose-1-phosphate. The liver is the site for the…

Q: How does glucose binding to glycogen phosphorylase stimulate glycogen synthesis?

A: When there is an enormous amount of energy present, then the cell uses these to synthesize glycogen…

Q: How do aminotransferases and glutamate dehydrogenase cooperate in the metabolism of the amino group…

A: Aminotransferases belong to transferases enzyme that transfers one group into another and glutamate…

Q: How many high-energy phosphates are generated or consumed in converting (a) 1 mole of glucose to…

A: The phosphate-phosphate bonds formed when compounds such as adenosine diphosphate (ADP) and…

Q: What does this important observation imply about the relation between the amino acid sequence of…

A: Protein function is directly related to the structure of that protein. A protein's specific shape…

Q: With respect to glycogen, what is the likely fate of excess glucose 6-phosphate in muscle?

A: The process of glycolysis in which the glucose is converted to two molecules of pyruvate along with…

Q: Why are the essential fatty acid associated with low incidence of heart disease? Cite some clinical…

A: Fatty acids are a long chain of glycerides. Often they have vital roles in the body.

Q: Hexokinase is found in almost all animal cells, except the liver and pancreas, while glucokinase is…

A: Hexokinase is the enzyme that has the ability to transfer an inorganic phosphate from the ATP to the…

Q: Why is it that only 2ATP molecules are required to store one glucose molecule as glycogen?

A: Glycogen is a homopolymer that is made up of repeated units of alpha-D-glucose and it is connected…

Q: Why does a young mouse maintained on a diet deficient in methionine fail to thrive unless choline is…

A: Methionine is an important antioxidant and prevents the body from radiation and also harmful…

Q: Does glucagon lead to the deactivation or activation of glycogen phosphorylase and the…

A: Glucagon is a peptide hormone secreted by α-cells of pancreas. Glucagon released during the low…

Q: What is the function of ATP in the conversion of glutamate to glutamine?

A: Glutamine synthetase is an enzyme which is responsible for metabolism of nitrogen by catalyzing the…

Q: What is the origin of the triacylglycerols transported by very low-density lipoproteins?

A: Very low-density lipoproteins (VLDL) carry about 47% triglycerides and 53% cholesterol in the body.…

Q: How many FADH2 _____& ATP _____are produced from the beta oxidation of Lauric Acid?

A: Beta oxidation is a catabolic process involved in the fatty acid breakdown for  energy production.

Q: During hyp[erglycemia or diabetes - what two regulatory enzymes are active? Why are they active?

A: Diabetes mellitus is a metabolic sickness commonly known as diabetes, all the more properly an issue…

Q: Which of the following glycosidic linkages is hydrolyzed by the a-amylase?

A: α amylase enzyme belongs to the enzyme group of amylase. Amylases hydrolyses the α-1,4-glycosidic…

Q: How many moles of acetyl-CoA are produced by the complete catabolism of 1 mol of sucrose?

A: Acetyl Co A plays an important role in many biological compound synthesis such as lipid,…

Q: Glucose binds to glycogen phosphorylase and competitively inhibits the enzyme. What is the…

A: Glucose belongs to the category of carbohydrates and is a monosaccharide. Plants and some algae…

Q: What type of reaction is catalyzed by isocitrate dehydrogenase and a-ketoglutarate dehydrogenase?

A: Oxidative decarboxylation is a process in which carbon dioxide is produced through the removal of a…

Q: Is AMP an allosteric inhibitor or activator of glycogen phosphorylase in the muscle or liver

A: Muscle glycogen phosphorylase: AMP act as activator of glycogen phosphorylase -a form (active form)…

Q: What is the advantage for some tumors to stop expressing the genes for glucose-6-phosphatase,…

A: Glucose-6-phosphate, phosphoenolpyruvate carboxykinase, and fructose bisphosphatase are the three…

Q: How does the yield of ATP from complete oxidation of onemolecule of glucose in muscle and brain…

A: Oxidative phosphorylation is the process that occurs during the electron transport chain. During…

Q: What are the two essential amino acids in the active site of chymotrypsin?

A: Serine-195 and Histidine-57 (involved in catalytic actions) are the  two essential amino acids in…

Q: what is one physiological consequence that might occur if gluconeogenesis was the exact opposite of…

A: Gluconeogenesis is a process by which glucose molecules are produced from non-carbohydrate…

Q: How might enzymes that remove amino groups from alanine and aspartate contribute to gluconeogenesis?

A: Metabolic pathways help to maintain the homeostasis of the body. It is made of biosynthetic pathways…

Q: Is GAPDH only a glycolytic enzyme? What are the other physiological functions of GAPDH?

A: As you have posted multiple questions and have not mentioned which one needs to be answered, we are…

Q: Can a pregnant cocker spaniel (dog) synthesize prostaglandin E2 from the dietary glucose? Yes or No.…

A: Prostaglandin E2 is considered a hormone, which plays a key role to induce labor during pregnancy.…

Q: What reaction glucoamylase catalyzes and why?

A: Glucoamylase is a widely used and oldest biocatalyst in the food industry. The glucoamylase is…

Q: Why does it make good metabolic sense for phosphoenolpyruvate carboxykinase, rather than pyruvate…

A: Guconeogenesis is the process whereby glucose is formed from non-carbohydrate metabolic substrate…

Q: What is the effect of the cholesterol diet on the amount of HMGCoA reductase protein?

A: Cholesterol is a compound which consist of cyclic ring and it is essential component which is…

Q: What type of bond is hydrolyzed by alpha Amylase?

A: Amylases are of three types namley : 1.Alfla amylase 2.Beta amylase 3.Gamma amylase Amylases are the…

Q: What are three heterotropic allosteric regulators of glycogen phosphorylase? Describe their effects.

A: One of the phosphorylase enzymes is Glycogen Phosphatase. Glycogen phosphorylase releases…

Q: Why can liver glycogen, but not muscle glycogen, be used to raise blood sugar levels?

A: Glycogenolysis is breakdown of glycogen. Glycogen has stored energy in form of glucose. It is broken…

Q: What are the metabolic effects of not being able to produce the M subunit of phosphofructokinase?

A: Introduction: One of the most significant glycolysis regulating enzymes is phosphofructokinase-1…

Q: what linkage does glycogen synthase catalyzes?

A: Glycogen synthase is an enzyme involved in glycogen synthesis. Glycogen is synthesized from extra…